Means for use in erecting metal-concrete structures.



No. 841,904. PATENTED JAN. 22, 1907. J. SPELMAN.

MEANS FOR U SEIN EREGTING METAL CONCRETE STRUCTURES.

APPLIOATION FILED NOV. 6. 19os.-

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No. 841,904. 'P'ATENTED JAN: 22, 1907.

J. SPELMAN.

MEANS FOR USE IN EREOTING METAL CONCRETE STRUGTURES.

APPLICATION FILED NOV. 6, 1906;

3 SHEETS.SHEET 2r five 0 1 I fameo PATENTED JANY 22, 1907.

J. SPELMAN. MEANS POR'USE IN EREGTING METAL commune: STRUCTURES.

APPLIOATION FILED NOV. 6, 1906.

3 SHEETS-SHEET 3.

usrrnn sirarns JAUICS SIEILBIiXX, OF CHICAGO, ILLINOIS. ASSIG-MTPH 'II .iQliN S. NIETUALF.

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(.OhIRlNY, A GOHPORAilTIO-N OF vILIJIIx KT Er MEANS FOR USE IN ERECTING lVlETAL-CQNCRETE STRUCTURES.

Patented Jan. 22, 1907.

To (17] 1117mm, it may concern:

Be it known that 'LJAiuns SPn'cMitN, a citi- .zen of the U nited'States, residing at ChlCitg'CL ing;

United ,States No. 790,007, granted to me May 16, 1905, and involve the use of scaffolding on which the outer and inner connected mold-sections are carried and liftingacks underneath the scaffolding for raising i to raise the mold as the work of erection tion.

ject of my invention is to provide for main-' pro resses.

The primary object of my present invention is to enable the acking operation to be employed for raising-the ,mold Without requiring scaffolding to be provided as the medium through which to effect the jacking action, since the scaffolding involves for each structure a large quantity of lumber, whichis very expensive; and a further object is greatly to simplify the mold-raising opera- A still further and very important ob twining all times thus continuously the support or the inold at every point of application to it of a jack for sustaining and lifting it, thereby to avoid at any time leaving the mold unsupported at any such point, since if left so unsupported its weight tends to sag it at that point, and thus to disorganize its required true position besides unduly straining the mold structure.

WVhile my present invention is not limited in its use to connection with the particular mold construction, disclosed in my aforesaid atentin fact, it may be used not only with any other suitable mold construction, but

also for raising and sustaining scaflolding,

platforms, runways, and the. like employed in the erection of mo. al-concrete structures for the sake of convenience in explaining it Y I have selected for illustratn'ig its apphcal sented at C and involves the iollowmg-de- Means adapted for the aforesaid pnrpose, form'the subject of Letters Patent of the tion figures from the drawings of said patent, to which reference may be had for description of details of the patented mold con struction. y

In the accompanying drawings, Figure 1 is showing'a mold applied to the wall of a metalconcrete structure undergoing erection and equipped with my improved mold raising and sustaining device, the view being taken at the line 1 on Fig. 2- and regarded in the direction indicated by the arrow; Fig. 2-, a broken plan section taken at the ine 2 on Fig. 1 and viewed in the direction of the arrow Fig. 3, a view showing my improved lifting and sustaining device in vertical sec- ;tional elevation, the section being taken at the line '3 on Fig. 2 regarded in the direction of the arrow and enlarged; Fig. 4, a section taken at the'line 4-011 Fig. I viewed in the direction of the arrow and enlarged; and Fig. 5, a broken view in elevationof one of the vertical metal reinforcing-bars, showmg a desirable splicing detail. v

A denotes the wall of a metal concrete structure in process of erection and constructed of a skeleton framework of upright metal bars a, surrounded. at intervals by annular metal bars Z) and embedded in concrete 0, which is filled in the space between the outer ant inner sections (Z and (I ofa mold B, respectively surrounding the said skeleton structure and extending about the inner side thereof. The mold illustrated is of the construction of that shown and described in my aforesaid patentand involves, therefore, one

or more spacing-timbers provided at int-'e'i combination with a mold, soa'll'old, platform,

runway, and the like used in the erection of a structure of the character rciorred to.

The raising and sustaining device is represcribed construction: A substantial metal frame g of general U-shape in cross-section I I ,tion extending through theheadlfi.

is provided at its ends with heads g and g extending at a right angle from it, the upper head, being provided with a Vertical aperture h and t i e lower head being bifurcated, as represented at g. unthreaded stem portion i through and is there rotatably confined in the frame-head g, above which it has fastened to it ahead 1?,

provided with an opening i into which to insert a suitable implement, such as an iron bar, for turning the screw, cnwhich is also provided a collar 1", and the screw is confined against longitudinal movement in its bearing g between the collar and the head '5 A frame 7c, similar to the frame 9 in having an upper head k and a lower bifurcated head it, is reciprocably supported within the frame 9, being confined by longitudinal guide-flanges k extending from its opposite sides in longitudinal guide-grooves g pro vided in the inner sides of the outer frame.

Alining with the aperture h in the head 9 is a bore 1C extending lengthwise through the upright metal bars a for supporting the mold,

a frame 9 is connected with a face of each spacing-timber or pair thereof, if two'be -em ployed, as represented, by letting. into a recess n in the timber a tongue n, projecting from the head g and boltingtheframe-to the timber or timbers at different oints, as represented at w in Fig. 1, and the evice C is hung on an adjacent bar a, which passes through the openings and h by clamping engagement with the bar of the cams qr pawls l and m, as represented in Fig. 3, this engagement being maintained to resist the gravity of the mold, tending to drop it by the weight of the arms Z and m, which may be supplemented, if re uired, by weights (not shown) hung or ot erwise rovided upon them. As will be understood: a plurality of the devices C are employed, preferably one on each upright bar on adjacent to a spacer e, whereby the mold is supported at as many points about the structure undergoing erection as may be required.

As the work of molding the concrete progresses in the erection of the structure the upright bars a, are lengthened by splicing in any suitable manner, which may depend upon the character of thelbar employed, such as a T-bar, a cylindrical bar, as shown, or a A screw & passes at its tubular. bar; suitable splice may be made with a dowel-joint 0, as represented in Fig. 5.

To raise the mold B from time to time in the'progress of the work of erection, each device C is actuated, usually in turn, to lift the the head i to'ward the right througha portion of a complete turn. ing the head is .to unscrew the screw & in its bearing 7c',which acts as a stationary nut, by reason of the frame if being held against depression by engagement of the pawl 51 with the bar a, so that thus turning the screw jacks up the mold B at the point of application on the device 0, the frame g of which rises on the respective bar a, carrying with it the mold, which cannot yield downwardly aftei the turning operation is completed by reason of the continued clamping engage ment with the bar of the pawl Z on the frame k. Thus the screw i of each device C is actuated in turn throughout the progress of The effect of thus turnthe implement engaged for the purpose with V erection of the. structure until the latter hasattained the predetermined height, when the mold is removed and the devices C are taken off, as by raising them off the upper ends of the upright, metal bars or the 11' per projectframe is until the head 9 encounters the'head k whereupon to permit the described screw action to further lift the frame 9 and the mold the frame must be raised to-a higher position'fom which to perform its stationarynut function. This may be accomplished by turning the screw i in the direction contrary to that described, whereby since the frame 9 is held and the mold is thus sustained by the clamping engagement with the bar aof the pawl fit, the frame is is screwed upward along the bar to or toward the position rppresented 3,'the pawl Z slipping a- 0 provided with it. i Y

The purpose ofpr'ovid-ing the two cooperating frames 9 is, each equipped .wit a clamping-pawl, is to afiord the two gri pingpoints against the barto the device and thus insure their required stabilit of sustainment of the mold. It would e within my invention, however, to provide only one frame with its clamping-pawl and any other suitable means to support the screw device for intermittently raising the frame and the mold carried by it along the res )ective bar a. It will be observed that the bar upon which my improved, lifting and sustaining device is hung finds in the latter bearinging portions of these bars may e disjointed the bar to release thereon the frame points against the tendency to bend, and

thus distort it of the pawls engaging with it.

These bearing-points exist at p and p, (see in the grooves g ofthe flanges 1c" on theframe 7c.

It has hereinbefore been suggested that my invention' may be used for performing its described function upon scaffolding, platforms, runways, and the like, besides molds employed in the erection of metal-concrete structures, so that, while a mold alone is specified in the append ed claims, that term is intended to include such other paraphernalia as suggested.

What I claim as new, and desire to secure by Letters Patent,is--

1. In a structure of the character described, the combination with an upright metal bar thereof, of a mold, a frame movable on said bar and fastened to the mold and provided with frame-supporting means releasabl engaging said bar, and a second frame movable on said bar and adjustablv connected with said first-named frame and provided with frame-supporting means releasably engaging said bar, for the purpose set forth. I

2. In a structure of the character.described, the combination with an. upright metal bar thereof, of a mold, a frame movable on said bar and fastened to the mold and provided with a pawl releasably engaging said bara second frame movable-on said bar airri'p'prm vided with a pawl releasably engag rgi itiand a screw device connecting said frames, for the purpose set forth.

3. In a structure of the character described, the combination with an upright metal bar thereof, ofa mold, a frame mov able on said bar and presenting thereto a bearing-point and fastened to the mold, a pawl journaled on the frame to releasably engage said bar adjacent to a bearing-point, a

second frame movable on said bar and presenting thereto .a bearing-point and having journaled upon it a pawl releasably engaging the bar adjacent to said last-named bearing, and a screw device connecting said frames, for the purpose set fortlr' 4. In a structure of the character described, the combination wit an upright metal bar thereof, of a 'mold, a frame movable on said bar and fastened to the mold and provided with upper and lower heads, a pawl iournaled on the lower head to releasably engage said bar, a second frame movable on said bar, provided with upper and lower heads and with a pawl j ournaled ori'the lower head to releasably engage the bar, and a screw device having a stem rota'tably supported and confined against longitudinal movement in the upper head of said first-named frame,

' with its thread ed portion workingin the up per head of said second frame.

5/ In a structure of the character described, the combination with an upright metal bar thereof, ofa' mold, a frame mow able on said'bar and-fastened to thr mold and provided withu T er and lower heads, a pawl journaled' Onjtlieffiwef head to releasablyeir gage said barg-fa second frame movable on said bar, having a guiding connection with said first-named frame and provided with up er and lower heads and with a pawl journa edon the lower head to releasably'engage the bar, and a screw device having a stem rotatably supported and confined against longitudinal movement in the upper head of said first-named frame, with its threaded portion working in the upper head of said second frame.

Y JAMES SPELMAN. In pl es'en'ee of' J. H. LANDEs,

O. W. WASII'BURNE. 

